A superconducting coil joint connection device in a superconducting current limiter

Abstract

The invention discloses a contact connection device for superconducting coils in superconducting current limiters. The device comprises an upper base, a lower base, a fixed stand column, an upper outer copper block contact, a lower outer copper block contact, an inner copper block contact, an outer insulating pressure plate, an intermediate insulating separation plate, an inner insulating pressureplate, an upper outer superconducting coil, an upper inner superconducting coil, a lower outer superconducting coil, a lower inner superconducting coil, an upper tightening plate and a lower tightening plate, wherein the upper and lower bases are fixed; the fixed stand column is mounted between the upper and lower bases; the upper outer superconducting coil is soldered on the upper outer copper block contact; the lower outer superconducting coil is soldered on the lower outer copper block contact; and the upper inner superconducting coil and the lower inner superconducting coil are respectively soldered on the inner copper block contact. The device is capable of realizing the transition, connection and insulation between coil modules, and realizing modularized design, is relatively low inmanufacturing cost and convenient to mount, and has a relatively high commercial value.

Description

technical field [0001] The invention relates to the field of superconducting current limiters, in particular to a superconducting coil joint connection device in a superconducting current limiter. Background technique [0002] With the rapid development of the national economy, the demand for electricity continues to increase, and the scale of the power grid continues to expand. If the fault current breaks through the breaking capacity of the existing circuit breaker, it will seriously endanger the relevant electrical equipment in the system. In order to ensure the safe and reliable operation of the system, it is necessary to quickly Cut off the fault current. In order to limit the short-circuit current to a controllable level, the concept of a superconducting current limiter has long been proposed. However, since low-temperature superconductors operate at the temperature of liquid helium, the operating costs are high and the low-temperature system is bulky, so they cannot ...

AI Technical Summary

Problems solved by technology

However, low-temperature superconductors cannot be commercialized because they operate at the temperature of liquid helium, which makes the operation cost high and the cryogenic system is bulky.

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